Which phrases describe all the outer planets’ motion? Check all that apply.
no rotation
fast rotation
slow revolution
opposite revolution
north to south rotation

The ball rises for v/g seconds; which equals 14.7/9.8=1.5 seconds . After this time, it’s height will be:

h(t)=g/2(1.5)²+14.7(1.5)

=-4.9 x 2.25 + 22.05

=11.025m

The ball then falls for 49+11.025=60.025m, which takes:

g/2t²=60.025

t²=12.25

t=3.5 secs

Total time: 1.5+3.5=5 seconds

Answer:

Elasticity and Density of the medium

Explanation:

Elastic properties relate to the tendency of a material to maintain its shape and not deform when a force is applied to it. A material such as steel will experience a smaller deformation than rubber when a force is applied to the materials. Steel is a rigid material while rubber deforms easily and is a more flexible material.

At the particle level, a rigid material is characterized by atoms and/or molecules with strong forces of attraction for each other. These forces can be thought of as springs that control how quickly the particles return to their original positions. Particles that return to their resting position quickly are ready to move again more quickly, and thus they can vibrate at higher speeds. Therefore, sound can travel faster through mediums with higher elastic properties (like steel) than it can through solids like rubber, which have lower elastic properties.

Density

The density of a medium affects the speed of sound. Density describes the mass of a substance per volume. A substance that is more dense per volume has more mass per volume. Usually, larger molecules have more mass. If a material is more dense because its molecules are larger, it will transmit sound slower. Sound waves are made up of kinetic energy. It takes more energy to make large molecules vibrate than it does to make smaller molecules vibrate.

Average velocity has two parts:  Its magnitude (size) and its direction.

Its magnitude is

(straight-line distance between start-point and end-point, regardless of the route that's actually followed from start to finish) divided by (time taken to travel from start to finish).

Its direction is

(direction from start-point to end-point)

Notice that straight from this definition, the average velocity of going around a full circle is zero, no matter how fast you traveled.  That's because the size of the  average velocity is calculated from the straight-line distance from start-point to end-point, and that's zero if you finish at the same point you started from.

Answer:

C) Amplitude.

Explanation:

By definition, the amplitude of wave is defined as the distance from the rest position to the highest or lowest point of the wave.

The highest and lowest points of the wave are called crests and troughs respectively; Therefore, the amplitude of the waves is also said to be the height of the wave from its rest position to its crest—and also the height of the from the rest position it its trough.

This means Choice C (amplitude) is the correct term used to describe the height of a wave from its rest position to its crest.

P.S: Choice A, the crest height, can also be the correct term, but the term ''amplitude'' is often used and is more technical.

The term for the height of a wave from its rest position to its crest is amplitude. Amplitude is half the distance from crest to trough, and it measures the displacement above or below the equilibrium point. Larger amplitudes correspond to waves with more energy.

The term used to describe the height of a wave from its rest position to its crest is amplitude. This is the characteristic height of the wave, above or below the equilibrium position. A wave's amplitude (A) measures the maximum displacement from this equilibrium position. The crest is the topmost point of the wave, while the trough is the lowest point. Importantly, the amplitude is often described as half the distance from crest to trough, emphasizing that it is the measure of displacement in one direction (either above or below the equilibrium).

The amplitude of a wave can impact its energy, with larger amplitudes indicating waves carrying more energy. Contrary to amplitude, wavelength is the distance between two consecutive crests or identical points in the wave pattern, and frequency refers to how many waves pass a given point in a certain amount of time.

To clarify using an example, if the amplitude of a water wave is 0.2 meters and its frequency is 2 hertz, a bird sitting on the water's surface would move up and down a distance of 0.4 meters (twice the amplitude) with every wave and it would do this twice every second (frequency).

Yes, the mass of the astronaut’s bathroom is same but its weight will be less on the moon.

Further explanation:

First of all we will know about the mass and weight,

Mass: Mass of an object is its quantity or amount of inertia.

It remains constant and does not affected by change in the gravity.

Weight: Weight of an object is the amount of force experienced by the object when it comes in a gravitational field. If there is no gravitational field then there will be no weight of the object but the mass of the object will remain same.  

It is also a type of force.

Weight of the object can be calculated as,

[tex]\boxed{W = mg}[/tex]  

Here, [tex]W[/tex] is the weight of the object, [tex]m[/tex] is the mass of the object and [tex]g[/tex] is the acceleration due to gravity.

Consider that the mass of the astronaut’s bathroom is [tex]20{\text{ kg}}[/tex].

So, its weight on the earth will be,

[tex]{W_e} = 20{g_e}[/tex]

Here, [tex]{g_e}[/tex] is the value of acceleration due to gravity of earth and its value is [tex]9.8{\text{ }}{{{\text{m}} \mathord{\left/ {\vphantom {{\text{m}} {\text{s}}}} \right. \kern-\nulldelimiterspace} {\text{s}}}^2}[/tex] .

Substitute this value in above equation.

[tex]\begin{aligned}{W_e}&=20\times9.8\\&=196{\text{N}}\\\end{aligned}[/tex]

Now, we will calculate it weight on the moon.

[tex]{W_m} = m{g_m}[/tex]

Here, [tex]{g_m}[/tex] is the value of moon’s gravity and its value is given as [tex]1.6{\text{ }}{{{\text{m}} \mathord{\left/ {\vphantom {{\text{m}} {\text{s}}}} \right. \kern-\nulldelimiterspace} {\text{s}}}^2}[/tex].

Substitute this value of [tex]{g_m}[/tex] in above equation.

[tex]\begin{aligned}{W_m}&=20\times 1.6\\&=32{\text{N}}\\\end{aligned}[/tex]

Here, we can see the weight of the astronaut’s bathroom is more on earth as compare to moon.

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Answer detail:

Grade: High School

Subject: Physics

Chapter: Gravitation

Keywords:

Astronaut, bathroom, weight, moon, earth, mass, change, unchanged, constant, gravitation, force, quantity, same, acceleration due to gravity, force, acceleration.

10 N/m is the answer to "A spring extends by 10 cm when a mass of 100 g is attached to it. What is the spring constant."

A spring extends by 10 cm when a mass of 100 g is attached to it.  Spring constant will be 10.

The force a spring applies to items fastened to its ends is proportional to the distance the spring travels from its equilibrium length and is always pointed in the direction of equilibrium.

Consider a spring that has one end attached to a wall or ceiling and the other end being pulled or pushed by an object. The spring is pulled by the object, and the object is pulled by the spring.

The spring applies a force F to the object that is in the opposite direction as the free end's displacement. The equilibrium point of the spring's free end is at x = 0, and if the x-axis of a coordinate system is selected to be parallel to the spring.

Therefore, A spring extends by 10 cm when a mass of 100 g is attached to it.  Spring constant will be 10.

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Answer:

  Potential energy = 73.575 kJ

  Kinetic energy = 135kJ

  Total mechanical energy = 208.575 kJ

Explanation:

   The potential energy of a body is given by the expression, PE = mgh, where m is the mass of the body, g is the acceleration due to gravity value and h is the height of the body.

  The kinetic energy of a body is given by [tex]KE=\frac{1}{2} mv^2[/tex], where v is the velocity and m is the mass of body.

  Total mechanical energy = Kinetic energy + Potential energy

  [tex]KE=\frac{1}{2} mv^2=\frac{1}{2} *75*60^2= 135000J = 135kJ[/tex]

  PE = mgh = 75*9.81*100 = 73575 J = 73.575 kJ

  Total mechanical energy = Kinetic energy + Potential energy = 135+73.575

                                             = 208.575 kJ    

The answer is gravity

Gravity  is the single force on an object in free fall object.

C.  

The force of friction = coefficient of friction * normal force.  

Adding the book to the boy increases the normal force and the component of the gravitational force directed down the slide.  This in turn increases the force of friction as can be seen by the relationship from the above equation.  For a stationary object, the force of static friction is always equal to the force applied (in this case, it is the component of the gravitational force directed down the slide).  That means that so long as the boy is not moving and his mass increases, the frictional force is increasing also to balance the increased downward gravitation force directed down the slide.

Pressure at a given surface is given as ratio of normal force and area

so here force due to heel of the shoes is given as 80 N

and the area of the heel is given as 16 cm^2

so we can say

[tex] P = \frac{F}{A}[/tex]

here we have

F = 80 N

[tex]A = 16 cm^2 = 16 * 10^{-4} m^2[/tex]

[tex]P = \frac{80}{16 * 10^{-4}}[/tex]

[tex]P = 5 * 10^4 N/m^2[/tex]

so pressure at the surface due to its heel will be 5 * 10^4 N/m^2

Final answer:

The pressure exerted on the heel of the boy's foot is 5 N/cm².

Explanation:

To calculate the pressure exerted on the heel of the boy's foot, we can use the formula: Pressure = Force / Area. In this case, the force is the weight of the boy, which is 80 N. The area of the heel is given as 16 cm². Now we can plug these values into the formula:

Pressure = 80 N / 16 cm² = 5 N/cm².

Therefore, the pressure exerted on the heel of the boy's foot is 5 N/cm².

Answer:

 A and C

Explanation:

 Kinetic energy of a body is given by the expression, [tex]KE =\frac{1}{2}mv^2[/tex], where v is the velocity and m is the mass of body.

 In case of a simple pendulum the maximum velocity is at it's stationary position.

So maximum velocity i at position C, which means maximum kinetic energy is at position A.

The velocity of pendulum reduces as the angle between vertical stationary and current position increases.

 So, velocity at E and A are the minimum, so at A and E the kinetic energy value is minimum.

 Now examining the options given, we will understand the kinetic energy increase is maximum in case of A and C.

Answer:A and C

Explanation:

Answer:

Physical evidence can be defined as the real evidence or material that plays a major role in the matter that gave rise to the litigation, which can be introduced in the court as a evidence in the judicial proceedings.

It can be any object or material which was present at the time of the incident. Example: A knife, table, footwear, chair, box, et cetera.

It is a strong support to favor the argument or to reject the argument in the courtroom.

Physical evidence refers to tangible or intangible material objects that can establish a crime has been committed, or link the crime to its victim or perpetrator. Examples can include biological materials such as blood or hair, weapons found at the crime scene, or documents proving relevant aspects of the offense.

Physical evidence refers to any material object that can establish that a crime has been committed, or link a crime and its victim or its perpetrator. Such evidence can be both tangible or intangible.

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The tiny sports car would accelerate faster, because it requires less kinetic energy to move due to it's mass being less than the truck

The answer for your question is true

Answer: True

Explanation:

Genes can be turned off and turned on based on the body function. The switching on and off of genes is a continuous process which takes place life long.

This turning off and on of genes is known as gene regulation which is responsible when the genes will be on and when the genes will be off.

The DNA in same it is the functional gene which makes the cell different. Hence, the given statement is True.

Both of the brothers performed work.  The one who pushed with a greater force did more work, and it had a positive sign.  The one who pushed with a smaller force did less work, and it was also technically "negative" work, because the motion of the fridge was in the direction opposite to his force.

Now that THAT's settled, they ought to quit fridging around, and get that thing moved like their father asked them to do.

The kinetic energy of the particles is directly proportional to the thermal energy of the system. The correct options are Boiling Point; Decrease; Decrease; Vibrate in place respectively.

Therefore, the correct options are Boiling Point; Decrease; Decrease; Vibrate in place respectively.

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Distance traveled by car =14m

Total time taken =2sec

Speed =distance / time

=14m/2sec

speed=7 m/sec

1. Tangential velocity:

e) the instantaneous velocity of a body moving in a circular path.

2. Parabolic pathway

c. a curved path followed by projectiles

3. Projectile

d) an object projected through space, traveling in two dimensions, that accelerates vertically due to gravity.

4. Centripetal acceleration

a) acceleration towards the center caused by the centripetal force

5. Centripetal force

b) a force which keeps a body moving with a uniform speed along a circular path and is directed along the radius towards the center

SOLUTION is given in attachment below.

Final answer:

Typically, the symbol 'B' is used to denote a magnetic field in physics. Magnetic field lines are used to pictorially show the direction and strength of magnetic forces, originating at a magnet's north pole and ending at the south pole, forming closed loops.

Explanation:

The symbol used for magnetic field is not explicitly stated in the question, but typically, the symbol 'B' is used to denote a magnetic field in physics.

Representing magnetic fields through magnetic field lines is a valuable concept in physics. These lines are pictorial representations that illustrate the direction and magnitude (strength) of the magnetic forces at play. They emerge from the north pole of a magnet, loop around to the south pole, and continue through the magnet, forming closed loops.

A magnetic field points from the north to the south pole of a magnet. The strength and direction of the magnetic field can also be visualized using small compass needles or iron filings, with the field lines around a magnetic material indicating direction and magnitude. When mapping out these fields, symbols are used to represent whether the field is pointing inward (tail of an arrow) or outward (tip of an arrow).

As a rocket increases height and slows down, it gains more and more potential energy and loses more and more kinetic energy. Potential energy is store energy (usually determined by height), and kinetic energy increases as speed increases.

Pressure is (weight of the box) / (area under the bottom of the box). Neither of those quantities depends on the area of whatever is under the box. You could move the box from the deck of a battleship and put it on the kitchen table. The pressure it exerts doesn't change.

The new average pressure (P₂) is indeed 4 times the original average pressure (P₁). So, the answer would be 4p.

The average pressure exerted by an object on a surface is defined as the force applied perpendicular to the surface divided by the area over which the force is distributed. Mathematically, average pressure (P) can be represented as:

P = F / A

where F is the force and A is the area.

The original round sheet of wood first. When the box is resting on it, the force exerted by the box (weight) is the same regardless of the size of the sheet. However, the area over which this force is distributed will change when the sheet's diameter changes.

The area of the original round sheet of wood is A₁, and the area of the new sheet with half the diameter is A₂.

Since the force (F) is the same in both cases (as it depends on the weight of the box, which remains constant), we can write:

P₁ = F / A₁ (Original average pressure)

P₂= F / A₂. (New average pressure)

Now, know that the area of a circle is given by the formula:

A = πr²

where r is the radius of the circle.

If the diameter of the original sheet of wood is D, then the radius of the original sheet is D/2. The area A₁ can be represented as:

A₁ = π (D/2)² = πD² / 4

Now, for the new sheet with half the diameter, the new diameter would be D/2, and the radius of the new sheet is (D/2)/2 = D/4. The area A₂ can be represented as:

A₂ = π * (D/4)² = π * D² / 16

Now, let's compare the new average pressure (P₂) to the original average pressure (P₁):

P₂ = F / A₂ = F / (π * D² / 16) = 16F / π D²

Since the original average pressure (P₁) is P₁ = F / A₁ = F / (π * D² / 4) = 4F / π * D²

We can see that P₂ is 16 times larger than P₁:

P₂ / P₁ = (16F / π * D²) / (4F / π * D²) = 16

Therefore, the new average pressure (P₂) is indeed 4 times the original average pressure (P₁). So, the answer is indeed 4p.

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Answer:

  She will make the jump.

Explanation:

We have equation of motion , [tex]s= ut+\frac{1}{2} at^2[/tex], s is the displacement, u is the initial velocity, a is the acceleration and t is the time.

First we will consider horizontal motion of stunt women

   Displacement = 77 m, Initial velocity = 28 cos 15 = 27.05 m/s, acceleration = 0

Substituting

   [tex]77= 27.05t+\frac{1}{2} *0*t^2\\ \\ t=77/27.05=2.85 seconds[/tex]

So she will cover 77 m in 2.85 seconds

 Now considering vertical motion, up direction as positive

    Initial velocity = 28 sin 15 = 7.25 m/s, acceleration =acceleration due to gravity = -9.8 [tex]m/s^2[/tex], time = 2.85

    Substituting

           [tex]s=7.25*2.85-\frac{1}{2}*9.8*2.85^2=20.69-39.80 =-10.11 m[/tex]

  So at time 2.85 stunt women is 10.11 m below from starting position, far side is 25 m lower. So she will be at higher position.

  So she will make the jump.

Answer:

zero.

Explanation:

The condition for an object to be in equilibrium is that there is no resulting force acting on it, in other words, that the force on the object is zero:

[tex]F=0[/tex]

and by Newton's second law we know that

[tex]F=ma[/tex]

where [tex]m[/tex] is the mass of the object, and [tex]a[/tex] its acceleration.

So combining the two things:

[tex]F=ma=0[/tex]

⇒[tex]ma=0[/tex], This equation is fulfilled when [tex]a=0[/tex]

Wich tells us that for the the block to be in equilibrium, the acceleration must be zero:

[tex]a=0[/tex]

If a block is in equilibrium the magnitude of the block's acceleration is 0m/s²

According to Newton's second law, the force acting on a body is equal to the product of its mass and acceleration.

Mathematically F = ma where:

m is the mass of the object

a is the acceleration of the object

If a block is in equilibrium, the magnitude of the force acting on the block will be 0, that is F = 0

Substituting F = 0 into the formula above to calculate the acceleration;

F = ma

0 = ma

Swap sides

ma = 0

a =0/m

a = 0m/s²

This shows that if a block is in equilibrium the magnitude of the block's acceleration is 0m/s²

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After 28 seconds, the velocity of the object will be 151.2 m/s.

The velocity of an object after a given time can be found using the equation:

In physics, the equation used to calculate the velocity of an object when accelerated from rest is v = at, where 'v' is velocity, 'a' is acceleration, and 't' is time passed. In this question, we have an object accelerating from rest at a constant acceleration of 5.4m/s2 for a duration of 28seconds. By substituting the given values into the equation, we get v = 5.4 m/s2 * 28s = 151.2 m/s. Therefore, the velocity of the object after 28 seconds would be 151.2 m/s.

v = u + at

Where:

Substituting the known values into the equation:

v = 0 + (5.4 m/s2) * (28s)

Simplifying the equation:

v = 151.2 m/s

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Yes you are right but sometimes just because a number is  bigger doesnt always make it so.

When converted to the same units, 50 m/s is equivalent to 180 km/h, which is faster than 140 km/h.

To compare the speed of 50 m/s with 140 km/h, we need to convert them into the same units. We know that 1 m/s is equivalent to 3.6 km/h. Therefore, 50 m/s is equal to 50 imes 3.6 km/h, which is 180 km/h.

Comparing this with 140 km/h, we can see that 50 m/s (180 km/h) is indeed faster than 140 km/h.

high low ...lowish highish, min max

Both fission and fusion are nuclear reactions that produce energy, but the applications are not the same. Fission is the splitting of a heavy, unstable nucleus into two lighter nuclei, and fusion is the process where two light nuclei combine together releasing vast amounts of energy.

(On edge) Sample Response: In nuclear fission, the mass of the original nucleus is greater than the mass of the products. The extra mass is converted to energy. In nuclear fusion, the total binding energy of the lighter nuclei is greater than the binding energy of the heavier nucleus. Extra energy is released during the reaction.

it got to be jumping jacks that all i got

Answer:

Explanation:

A common activities where cardiovascular and strength training are together is during Construction tasks. In this context, aerobic and anaerobic exercises are present.